Finding the Fourth Proportional to 2,072.25, 2,859.71 and 1,140.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.25 : 2,859.71 = 1,140.75 : x
2. Step 2: Convert to fraction form
   2,072.25/2,859.71 = 1,140.75/x
3. Step 3: Cross multiply
   2,072.25x = 2,859.71 × 1,140.75
4. Step 4: Simplify right side
   2,072.25x = 3,262,208.48
5. Step 5: Solve for x
   x = 3,262,208.48/2,072.25
6. Step 6: Final answer
   x = 1,574.24